Fake hand rush? Is the American drip filter an "IQ tax"?

Customers who often come to Front Street to buy coffee beans sometimes ask if there is a lazy coffee machine suitable for use at home. It is best if the price is not too high. At this time, Front Street will say: You can learn about American drip coffee machines! Among home users, the "popularity" of American drip coffee machines is extremely polarizing. Many people think that it